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| 1980 Konijn Fredje | Essentialization of a rabbit |
| 1983 Glass contructed object | Essentialization of catching light |
| 1984 Plastic dog | Essentialization of a dog |
| 1986 Ingrid Sikkens / Dress | Fashion or Art? |
| 1986 Ingrid Sikkens / Fragile Bird | Essentialization of fragility |
| 1988 Ingrid Sikkens / Blauwe Pop | Essentialization of attitude |
| 2013 Farewell to the Queen | |
| 2010 - 2020 Death is coming closer |